What years did Don Brennan play?

Don Brennan played in Major League Baseball from 1933 to 1937.

Was Don Brennan a pitcher?

Yes. Don Brennan pitched in the major leagues, recording 21 wins and 172 strikeouts.

How many home runs did Don Brennan hit?

Don Brennan hit 0 career home runs with 17 hits.

What were Don Brennan's career stats?

In 141 games, Don Brennan went 21-12 with a 4.19 ERA, 172 strikeouts, 397.0 innings pitched, and 19 saves.

What position did Don Brennan play?

Don Brennan played primarily as a pitcher, the position where he appeared in the most games.

How tall was Don Brennan and how much did he weigh?

Don Brennan was listed at 6 feet and 210 pounds.

What was Don Brennan's career ERA?

Don Brennan finished with a 4.19 career ERA, going 21-12 with 172 strikeouts.

How many strikeouts did Don Brennan have?

Don Brennan recorded 172 career strikeouts.

Is Don Brennan in the Hall of Fame?

No. Don Brennan has not been inducted into the National Baseball Hall of Fame.

Don Brennan

Pitcher · Career Stats, Bio & Records (1933-1937)

Don Brennan was a pitcher who played in Major League Baseball from 1933 to 1937 for the New York Yankees, the Cincinnati Reds, and the New York Giants, a span of 5 seasons. Across 141 career appearances, he went 21-12 with a 4.19 ERA and 172 strikeouts. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 1532.4.

W (Wins):: Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
ERA (Earned Run Average):: Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
SO (Strikeouts):: For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
WHIP (Walks and Hits per Inning Pitched):: Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.

Data updated October 15, 2026

W–L 21–12

ERA 4.19

WHIP 1.55

SO 172

Pitcher PIV 1532.4

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'0" / 210 lb
Born: 12/2/1903 in Augusta, ME, USA
Died: 4/26/1953 in Boston, MA, USA
MLB Debut: 1933-04-16
Last Game: 1937-09-29

Full name: James Donald Brennan

📊 Compare This Player 📈 View Career Timeline

Career Pitching Statistics

Don Brennan — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
21	12	141	26	7	1	19	397.0	436	185	14	180	172	4.19	1532.4

Career ERA 4.19 vs. league average 4.28 across their career seasons — near league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Don Brennan — Season-by-Season Pitching
Year	Team	Lg	W	L	G	GS	CG	SHO	SV	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
1933	NYA	AL	5	1	18	10	3	0	3	85.0	92	47	47	46	4.98	3.86 (-29%)	-517.0
1934	CIN	NL	4	3	28	7	2	0	2	78.0	89	33	35	31	3.81	4.29 (+11%)	-36.8
1935	CIN	NL	5	5	38	5	2	1	5	114.1	101	40	44	48	3.15	4.35 (+28%)	826.5
1936	CIN	NL	5	2	41	4	0	0	9	94.1	117	46	35	40	4.39	4.59 (+4%)	1580.3
1937	CIN	NL	1	1	10	0	0	0	0	16.0	25	12	10	6	6.75	4.34 (-56%)	-320.6
1937	NY1	NL	1	0	6	0	0	0	0	9.1	12	7	9	1	6.75	4.34 (-56%)	0.0
Career · 6 seasons			21	12	141	26	7	1	19	397.0	436	185	180	172	4.19	—	1,532

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

Don Brennan — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
141	110	7	17	2	0	0	6	0	6	45	.155	.205	.173	.378	0

Career AVG .155 vs. league average .278 across their career seasons — 44.4% below league average.

Career OBP .205 vs. league average .341 across their career seasons — 39.9% below league average.

Career SLG .173 vs. league average .395 across their career seasons — 56.2% below league average.

Career OPS .378 vs. league average .736 across their career seasons — 48.6% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Don Brennan — Season-by-Season Batting
Year	Team	Lg	G	AB	R	H	2B	RBI	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
1933	NYA	AL	18	27	1	7	0	2	3	9	.259	—	—	—	—	0.0
1934	CIN	NL	28	22	2	5	2	2	0	11	.227	—	—	—	—	0.0
1935	CIN	NL	38	30	3	3	0	2	2	11	.100	—	—	—	—	0.0
1936	CIN	NL	41	25	1	2	0	0	0	10	.080	—	—	—	—	0.0
1937	CIN	NL	10	5	0	0	0	0	0	3	.000	—	—	—	—	0.0
1937	NY1	NL	6	1	0	0	0	0	1	1	.000	—	—	—	—	0.0
Career · 6 seasons			141	110	7	17	2	6	6	45	.155	—	—	—	—	0

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Postseason Statistics

Playoff Career Batting

Don Brennan — Playoff Career Batting
G	AB	R	H	2B	3B	HR	RBI	BB	SO	AVG
2	0	0	0	0	0	0	0	0	0	.000

Playoff Batting by Year

Don Brennan — Playoff Batting by Year
Year	Round	Team	G	AB	R	H	2B	3B	HR	RBI	BB	SO	AVG
1937	WS	NY1	2	0	0	0	0	0	0	0	0	0	.000

Playoff Career Pitching

Don Brennan — Playoff Career Pitching
W	L	G	GS	SV	IP	H	ER	BB	SO	ERA
0	0	2	0	0	3.0	1	0	1	1	0.00

Playoff Pitching by Year

Don Brennan — Playoff Pitching by Year
Year	Round	Team	W	L	G	GS	SV	IP	H	ER	BB	SO	ERA
1937	WS	NY1	0	0	2	0	0	3.0	1	0	1	1	0.00

Game Log & Splits

View full game log (282 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

Don Brennan — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	75	50	4	10	0	3	.200
Away	66	60	3	7	0	3	.117

Pitching — Home / Away

Don Brennan — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	75	206.1	210	85	89	89	3.71
Away	66	190.2	227	98	91	85	4.63

Last 10 Games — Batting

Don Brennan — Last 10 Games — Batting
Date	Tm	Opp	Res	AB	BB	SO
1937-09-29	NY1	PHI	L	0	0	0
1937-09-26	NY1	BRO	W	0	0	0
1937-09-03	NY1	BRO	L	1	0	1
1937-08-31	NY1	STL	L	0	0	0
1937-08-25	NY1	CHC	W	0	1	0
1937-08-21	NY1	PHI	L	0	0	0
1937-06-09	CIN	BSN	L	1	0	0
1937-06-04	CIN	PHI	W	1	0	0
1937-05-31	CIN	PIT	L	1	0	1
1937-05-28	CIN	CHC	L	1	0	1

Last 10 Games — Pitching

Don Brennan — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
1937-09-29	NY1	PHI	—	1.0	1	0	0	1	1	0
1937-09-26	NY1	BRO	—	0.2	0	1	1	2	1	0
1937-09-03	NY1	BRO	—	3.0	7	5	4	2	0	0
1937-08-31	NY1	STL	—	0.2	1	0	0	0	0	0
1937-08-25	NY1	CHC	W	2.0	0	0	0	1	0	0
1937-08-21	NY1	PHI	—	2.0	3	2	2	3	0	0
1937-06-09	CIN	BSN	—	4.0	3	1	1	1	1	0
1937-06-04	CIN	PHI	—	1.2	5	3	3	1	0	1
1937-05-31	CIN	PIT	—	1.0	2	2	2	2	0	0
1937-05-28	CIN	CHC	L	2.1	5	4	3	2	1	0

Fielding Statistics

Career Fielding Totals by Position

Don Brennan — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	141	0	10	75	5	5

Season-by-Season Fielding

Don Brennan — Season-by-Season Fielding
Year	Team	Pos	G	PO	A	E	DP
1933	NYA	P	18	3	23	2	2
1934	CIN	P	28	1	15	1	0
1935	CIN	P	38	4	14	0	1
1936	CIN	P	41	1	19	2	2
1937	CIN	P	10	0	4	0	0
1937	NY1	P	6	1	0	0	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Don Brennan — Career Games by Position
Position	Games
Pitcher	141

College History

Don Brennan — College History
School Name	City	State	Years Attended
Georgetown University	Washington	DC	1924, 1925

Most Similar Players

Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.

Career Spans

Don Brennan (highlighted) compared to peers across the same era.

Don Brennan: the record in brief

According to the bio, Don Brennan debuted on April 16, 1933 and played a final game on September 29, 1937. The team column moves through the New York Yankees (1933), the Cincinnati Reds (1934 to 1937), and the New York Giants (1937). Brennan played primarily as a pitcher and batted and threw right-handed. The bio adds a birth date on December 2, 1903, in Augusta, ME, USA and a listed size of 6-foot-0 and 210 pounds. Brennan's death is recorded on April 26, 1953, in Boston, MA, USA. Brennan's full given name, per the bio, is James Donald Brennan.

Across 141 games (26 starts), Brennan recorded 21 wins against 12 losses with a 4.19 ERA. Also on Brennan's record: 172 strikeouts and 19 saves. Brennan's 4.19 ERA was close to the 4.28 league figure for those seasons. Brennan won 5 games in 1933, the most of any season listed. Among the heaviest workloads, the lowest ERA was 3.15 in 1935, when the league's was 4.35.

Frequently Asked Questions about Don Brennan

What years did Don Brennan play?: Don Brennan played in Major League Baseball from 1933 to 1937.
Was Don Brennan a pitcher?: Yes. Don Brennan pitched in the major leagues, recording 21 wins and 172 strikeouts.
How many home runs did Don Brennan hit?: Don Brennan hit 0 career home runs with 17 hits.
What teams did Don Brennan play for?: Don Brennan played for 3 teams: the New York Yankees (1933), the Cincinnati Reds (1934–1937), and the New York Giants (1937).
What were Don Brennan's career stats?: In 141 games, Don Brennan went 21-12 with a 4.19 ERA, 172 strikeouts, 397.0 innings pitched, and 19 saves.
What position did Don Brennan play?: Don Brennan played primarily as a pitcher, the position where he appeared in the most games.
How tall was Don Brennan and how much did he weigh?: Don Brennan was listed at 6 feet and 210 pounds.
What was Don Brennan's career ERA?: Don Brennan finished with a 4.19 career ERA, going 21-12 with 172 strikeouts.
How many strikeouts did Don Brennan have?: Don Brennan recorded 172 career strikeouts.
Is Don Brennan in the Hall of Fame?: No. Don Brennan has not been inducted into the National Baseball Hall of Fame.